until
Promised one-time watch for changes
Demo
Usage
Wait for some async data to be ready
js
import { until, useAsyncState } from 'comuse/core'
const { state, isReady } = useAsyncState(
fetch('https://jsonplaceholder.typicode.com/todos/1').then(t => t.json()),
{},
)
;(async () => {
await until(isReady).toBe(true)
console.log(state) // state is now ready!
})()Wait for custom conditions
You can use
invoketo call the async function.
js
import { invoke, until, useCounter } from 'comuse-core'
const { count } = useCounter()
invoke(async () => {
await until(count).toMatch(v => v > 7)
alert('Counter is now larger than 7!')
})Timeout
ts
// will be resolve until ref.value === true or 1000ms passed
await until(ref).toBe(true, { timeout: 1000 })
// will throw if timeout
try {
await until(ref).toBe(true, { timeout: 1000, throwOnTimeout: true })
// ref.value === true
}
catch (e) {
// timeout
}More Examples
ts
await until(ref).toBe(true)
await until(ref).toMatch(v => v > 10 && v < 100)
await until(ref).changed()
await until(ref).changedTimes(10)
await until(ref).toBeTruthy()
await until(ref).toBeNull()
await until(ref).not.toBeNull()
await until(ref).not.toBeTruthy()